Main Article Content
Yellow turmeric, black pepper and purple onion, collected from Go Cong Dong district, Tien Giang province, were cleaned, dried, and crushed into powder. The extraction was carried out in a tightly closed reaction tube for a few days at room temperature in the dark. Ethyl acetate was selected to be the most suitable solvent for extraction during the study period of 1-30 days. Varying the extraction conditions did not increase the extraction yield. The cytotoxicity in vitro against the human skin fibroblasts HSF cells and the human colon cancer HCT-116 cells was studied. Black pepper and purple onion extracts showed a good effect on the biological activity of turmeric extract. The obtained extracts were analyzed using LC/MS, TLC, column chromatography on silica gel.